public ReturnOrigin (SavedOrigin next, UsageVector vector, ExitStatement stmt)
: base (next, vector)
{
Stmt = stmt;
}
public override bool AddReturnOrigin (UsageVector vector, ExitStatement exit_stmt)
{
Parent.AddReturnOrigin (vector, exit_stmt);
return true;
}
// returns true if we crossed an unwind-protected region (try/catch/finally, lock, using, ...)
public virtual bool AddReturnOrigin (UsageVector vector, ExitStatement stmt)
{
return Parent.AddReturnOrigin (vector, stmt);
}
public override bool AddReturnOrigin (UsageVector vector, ExitStatement stmt)
{
vector = vector.Clone ();
vector.Location = stmt.loc;
vector.Next = return_origins;
return_origins = vector;
return false;
}
public override bool AddReturnOrigin (UsageVector vector, ExitStatement exit_stmt)
{
if (finally_vector != null) {
int errors = Report.Errors;
Parent.AddReturnOrigin (vector, exit_stmt);
if (errors == Report.Errors)
exit_stmt.Error_FinallyClause (Report);
} else {
saved_origins = new ReturnOrigin (saved_origins, vector, exit_stmt);
}
// sets ec.NeedReturnLabel()
stmt.SomeCodeFollows ();
return true;
}